Pasteurizer



March 4, 1936. G. J. MEYER 1,749,150

PAsTEURIzBn I Filed March S, 1923 2 sneetsshen 1 G #hir-@Much .n

WITNESSES v f /NVE/g.' TOR March4, 1930. G. J. MEYER Y1,149,150

PAsTmmIzEn AFiled man 1923 2 Shui am 2 FE1-G. Z .z2 i ff l ral ` UNITED STATES' PATENT OFFICE GEORGE a'. MEYER, 0E MILWAUKEE, WrscoNsIN, AssI'GNoE 'To GEO. J. MEYER MANU- coMPANY, or MILWAUKEE, WIsCONSIN, A CORPORATION E wIscoNu i j EAcTUnINe i PAs'rEUEIzER Y Appui-.ation med Maren 5,1923.v serial N0. 622,976.

This invention has for its object to providea pasteurizer in which the bottle carrlers are suspended from traveling chains and in their sinuou'scourse are maintained vupright by guiding means at their respective ends cooperating with stationary guides.

Another object of the invention is to provide a pasteurizer of this'type with inclined bottom walls beneath the sections .in which the bottle carriers descend,` whereby fallen bottles or other material may not stand in a vertical position and interfere with the travel of the bottle carriers.`

Another object ofthe invention 1s to providesuch av pasteurizer with a superheated zone immediately preceding the pasteurizlng zone, where a temperature above the'pasteur@ lizing temperature is maintained to complete the preliminary heating of the bottles at a higher rateof increasingtemperature than would otherwise be thecase and, in effect, maintaining the rate of increase intemperature vto which'the bottles are subjected on entering'the machine until they reach the pasteurizing temperature. 0

With the above and other objects in view the'invention consists in the pasteurizer as herein claimed and all. equivalents.

Referring to the accompanfying drawings, in which like characters ofre erence indicate the same parts in different views,

Fig. 1 is a longitudinal sectional view on line 1-1 of Fig. 2 of a pasteurizer construct-f ed in accordance with this invention;

Fig. 2 is a transverse sectional view on line 2--2of Fig. 1 thereof on a vertical plane to the right of the center of the'mlddle section of the tank, as shown in Fig. 1, but showing only one of the bottle carriers, and

Fig. 3 is a perspective view of one of the carriers showing'the vertical and horizontal guides therefor. i.

In these drawings 10 indicates a base or support on which is'mounted a tank 11 formed Ain sections partially indelendent of each other as the result of dou c ains 1l guide wheels, shown in dotted lines, and are suitably'driven so as to follow the arrows 1n le partitions or'A u standing walls 12 between them. Conveyer 3 pass around suitable sprockets 'orl right throughout their travel and it is 'one' of the purposes of this invention to provide means to insure Atheir remaining upright.

Each bottle carrier, as best seen in Fi 3,

consists of a rectangular basket-like container freely suspended on a rod 15, which connects the two chains 13. At one end each of the bottle carriers is provided with a pair of guide rollers 16 arranged in approximately the same horizontal plane as the rod 15 and these rollers, by their engagement with horizontal guide shelves 17 projecting from 'one side wall of the tank, support the bottle carrier against swinging movements whenever the travell is in a horizontal direction. At the other end each bottle carrier is provided with rollers 18 arranged in approximately the same vertical plane with the rod 15 so as to travel between projecting from t e side walls on the other side ofthe tank to prevent the carriers from swinging or tilting whenever they are traveling vertically.

Each of the tank sections beneath the descending portionl of the bottle conveyer is provided with a rounded inclined bottom 20 that will prevent bottles or other material standing uprightthereon so as to interfere with the downward traveling ofthe bottle carriers. In the tank sections there are downwardly extending double s'embling the partitions 12 sections, and a cover 22 extends across the tank from the first partition 21 to the last partition 21, thus enclosing a section of the upper part of the tank between the first and second 'partitions 21 in which is created a superheating zoneA where the water is maintained at a temperature somewhat higher than the pasteurizing temperature. With the pasteurizer o'f this invention the bottle carriers are loaded with bottlesas they rise at te left end of the machine and they partitions 21 relpairs of parallel guides 19.

'zor

etween the tank descend through the open portion of the first tank section while guided by the guides 19 so as to be inca ab e of tilting, They travel horizontally w lile guided by the guide 17 until reaching the guides'19, by which they I v are gulded further durlngthelr upward travel into the su erheating zone at the upper part of the enc osure formed between the cover 22 and the first two partitions 21..v In

lo this manner the bottle carriers travel'through each of the succeeding tank sections which constitute the asteurizing section of the machine always eld upricht by'their e gagement with the guides l? and 19 and fi ally,

after being lifted out of the `tankz vthey are unloaded as they descend at the rlght hand end of the machine and are returned beneath the tank where the chains are supported by suitable guide rolls to repeat the operation. The bottle carriers are not only restrained against' tipping` to empty the bottles in the tank, but should a bottle fall to the bottom of the tank, it could not lodge in a position to obstructthe passage \of the bottle carriers owing to the inclined tankl bottoms beneath thefdescending portions of the bottle conveyer which serve to defiect such obstructions to the right of the tank 'sections where clean` out doors 23 are provided for their removal. By dividing oil", by means .of depending partitions 21, a portion of the tank and supplying it with thermostaticall controlled heat regulating means 24 for a mitting hot water thereto through a pipe 26, a superheated zone is provided as indicated at 27 where v the water may be kept at a higher temperature than elsewl'iere to facilitate the rise in temperature of, the bottles when they approa ch the pasteurizin section. The thermostatically controlled eat-regulating means 24 may consist ofa pipe 26 conducting water from near the bottom of the second tank section to the beginning of the superheated zone in the first tank section, such water being imfrom a thermostatically controlled steam valve. By locating the thermostat 25 for such heat regulating means in thepasteurizing section, it is possible to automatically increase the temperature of the superheated zone whenever the bottles are delivered to the pasteurizing section at a temperature less Delle'd and heated by the injection of steamv teurizing medium, at least at the beginning of pasteurization, and at this time there is a ver rapid rise in temperature, but as this di erence becomes less when the pasteurizing temperature is approached, the rise becomesslower and it is for the Apurposeof speeding up this increase of tem erature .near the pasteurizing point, that t e` superheating zone 1s adopted. i

From heat charts obtained in this manner in the use of machines without the superheating zone feature, it is found that the temperature rises from 2() degrees Reaumur to about 45 degrees in ten minutes and that it takes about twelve minutes to go -from 45 degrees to 48 degrees, and as it is important not to go above 48 degrees or'whatever temperature is desired, to avoid burning or giving thegoods an oit taste, and as it also requires a definite time at this temperature, the capacit of the machine is considerably reduced by t e presence ofthe curve or the slow increase in temperature at that point. This is the purpose of the superheating zone where the temperature of the medium will be carried 5 or 8 degrees above pasteurization, and this zone is so arranged that it will require about five or eight minutes for the Goods to pass through it and be quickly brought u to the pasteurizing temperature or even slightly above for a minute or less, which would not be detrimentah Ihe goods will then descend into the pasteurizlng section to be maintained at the proper temperature and they will remain there for the full twenty minutes, that is the temperature of this section will be maintained at that during the travel of the goods through the pasteurizing section, which will take about twenty minutes time.

y What I claim as new and desire to secure by Letters Patent is:

1. A pasteurizer comprising a tank having a.bottle conveyer passing therethrough rovlded wlth suspended bottle carriers, stat1on' ary guldes within the tank, and guide means carriedby the bottle carriers for engagement with sa 1d guides to prevent the bottlecarriers ttlrorlp tiltmg during their travel through the 2. In a pasteurizer, a tank, a bottle conveyerpassing through the tank and provided wlth suspended bottle carriers, and means for preventlng the titlting of the bottle carriers comprisin vertical guides at one side of the tank and orizontal'guides at the other side 120 of the tank, and guide means at the respective ends of the bottle carriers for enga ing the vertical guides during the vertic movements of the bottle carriers and for en aging the horizontal guides during the horlzontal movements of the bottle carriers.

3. In a pasteurizer, a tank, a' bottle conveyer passmg therethrough comprising suitab y supported and driven chains, cross-bars connecting the chains, bottle carriers sus- '130 pended from the cross-bars, and means for preventing the bottle carriers from tilting comprising vertical guides at one side of the tank, rollers on one end of the bottle carriers engaging with said guides during the vertical movements of the bottle carriers, horizontal guidesy at the other side of the tank, and rollers on the other end'of the bottle carriers for engaging said horizontal guides during the horizontal movements of the bottle carriers.

4. In a pasteurizer, a continuous heat-exchanging passagewa having a pasteurizing section, means or conveying material through the passageway for the purpose of pasteurizing and cooling, and a superheated section of the passageway located just preceding the pasteurizing section where a higher temperature is maintained f r the 2q purpose of continuing the rapid rise in tem- /perature of the material to be pasteurized.

5. In a pasteurizer, a continuous heatex changing passageway having a pasteurizing section,l means for conveying material through the passageway for the purpose of pasteurizing and cooling, a super eated section located just preceding the pasteurizing section where a higher temperature is maintained for the purpose of continuing the :e rapid rise in temperature of the material to be pasteurized, and means for controlling this temperature so that'the material will be of the pasteurizing temperature when it enters the pasteurizing section.

6. In a pasteurizenaI continuous heat-exchanging passageway, means for expediting the operation of raising the temperature of the goods to pasteurizing temperature comprisingin combination with the conveyor for 40 conducting materialthrough the passa eway and the pasteurizing chambers of t e passageway maintained at (pasteurizing temperature, of a superheate chamber of the passageway through which the conveyor passes before enterin the pasteurizing chamber, said superheate chamber being maintained at a temperature higher than thatof y v the pasteurizing chamber.

In testimony whereof, aix my signature.

GEORGE J. MEYER. 

